Method and device for transmitting information in mobile communication mode

ABSTRACT

The invention relates to personal radio communications and can be used in a mobile telephone communications system. The mobile communications system includes a mobile communication means  1  for transmitting messages either directly by generating an electromagnetic radiation, or through a mobile repeater  3  by generating an auxiliary flux. The mobile communication means  1  receives data either directly from a base transceiving station  9 , or from the repeater  3  using an additional auxiliary radiation generated by the mobile repeater.

FIELD OF THE INVENTION

[0001] The invention relates to wireless communications in general andparticularly to personal radio communications, and is applicable in amobile telephone communications system.

BACKGROUND OF THE INVENTION

[0002] Most of conventional apparatuses for transmitting a message in amobile communications system comprise a transceiver coupled to a controlunit and including an emitter, such as a transceiver antenna (U.S. Pat.No. 5,530,736 A, IPC H04Q Jul. 20, 1994). A disadvantage of thementioned and similar radiotelephones is that the electromagneticradiation affects the user's (subscriber) health, and in particular theradiation acts on his/her head causing, in particular, cancer diseases.The reason is that practically all mobile communications systems use adecimeter range frequency (900-1800 MHz), which frequency, at aradiation power of about one Watt and practically a zero distancebetween a mobile communication means, such as a radiotelephone, and theuser's head, is capable of creating in the temporal bone area a powerdensity 10-100 times exceeding the permitted values.

[0003] Another disadvantage of the known mobile communications systemsoperated on the basis of fixed base stations is inconsistency betweenradiation powers of a base station and, for example, a mobile telephone.Their receivers have practically equal sensitivity, and a lower, ascompared with a base station, radiation power of a mobile telephoneoften becomes the cause of the unilateral communication, when onlyreception of a signal from a base station is possible. Among the maincauses of this problem, a low radiation power of a cellular telephone(as compared to that of a base station) and its unamenable location,e.g. in closed premises, can be mentioned.

[0004] Most closely related to the present invention in respect of theset of essential features and lacking the aforementioned disadvantagesis a method of transmitting a message in a mobile communications system,including: transmitting, by a mobile communication means, such as aradiotelephone having a first subscriber or identification number and aninput device and a display, an electromagnetic radiation encoded by themessage, e.g. by modulation, said electromagnetic radiation havingpredetermined values of electromagnetic radiation parameters, andreceiving, by the mobile communication means from a base transceivingstation coupled with a first subscriber or identification number loggingmeans, an electromagnetic energy flux having predetermined parametersand modulated by transmitted data; generating, in the mobilecommunication means, a message-encoded auxiliary radiation, and using,for each mobile communication means, at least one mobile repeater havinga memory; said repeater receiving and processing the auxiliary radiationfor predetermined values of quality estimates of communication betweenthe mobile communication means and the mobile repeater, or between themobile repeater and the base transceiving station, and generating andtransmitting said message-encoded electromagnetic radiation, andexchanging control and clock signals between the mobile communicationmeans and the base transceiving station (PCT Application WO 00/18040,Mar. 30, 2000).

[0005] The method is implemented in an apparatus for transmitting amessage in a mobile communications system, including one or more basetransceiving stations and a mobile communication means. The mobilecommunication means includes, coupled to a central controller, aradiotelephone transceiver and an auxiliary radiation transceivermatched over auxiliary communication channels with a mobile repeaterincluding a repeater controller coupled to an internal memory of themobile repeater, the mobile repeater being a bilateral mobile repeaterwhose internal memory stores a subscriber number of the mobile repeater,the mobile repeater comprising, coupled to the repeater controller, atleast one bilateral radiotelephone transceiver and one bilateralauxiliary radiation transceiver, each of them being matched by itsparameters with the base transceiving station and the auxiliaryradiation transceiver of the mobile communication means, respectively.

[0006] However, the use of the prior art method and apparatus in mobilecommunications systems where data is continuously exchanged between themobile communication means and the base station involves difficulties.This is due to the fact that when a message is transmitted through amobile repeater, the message is received from a base station directly bya mobile communication means, and this may cause faulty operation of thesystem due to appearance of additional delay of response signal (afterthe reception of the message) associated with its processing in themobile repeater.

SUMMARY OF THE INVENTION

[0007] The object of the present invention is to eliminate impact of theadditional delay on reliability of the system operation.

[0008] The object is attained in accordance with the invention bytransmitting, by a mobile communication means, such as a radiotelephonehaving a first subscriber or identification number and an input deviceand a display, an electromagnetic radiation encoded by the message, e.g.by modulation, said electromagnetic radiation having predeterminedvalues of electromagnetic radiation parameters; and receiving, by themobile communication means from a base transceiving station coupled witha first-subscriber or identification number logging means, anelectromagnetic energy flux having predetermined parameters andmodulated by transmitted data; generating, in the mobile communicationmeans, a message-encoded auxiliary radiation; and using for each mobilecommunication means at least one mobile repeater having a memory; saidmobile repeater receiving and processing the auxiliary radiation forpredetermined values of quality estimates of communication between themobile communication means and the mobile repeater, or between themobile repeater and the base transceiving station, and generating andtransmitting said message-encoded electromagnetic radiation; exchangingcontrol and clock signals between the mobile communication means and thebase transceiving station; storing, in the mobile repeater memory, asecond subscriber or identification number, and connecting the mobilerepeater with the base transceiving station for the predetermined valueof said communication quality estimate, and then receiving by the mobilerepeater from the base transceiving station the electromagnetic energyflux having the predetermined parameters and modulated by thetransmitted data; wherein the message being received by the mobilecommunication means by receiving from the mobile repeater an additionalauxiliary radiation modulated by the transmitted data, and saidexchanging of the control and clock signals being performed between themobile repeater and the base transceiving station.

[0009] The method can be implemented in an apparatus having one or morebase transceiving stations and comprising a mobile communication meansincluding, coupled to a central controller, a radiotelephone transceiverand an auxiliary radiation transceiver matched, over auxiliarycommunication channels, with a mobile repeater including a repeatercontroller coupled to an internal memory of the mobile repeater, saidmobile repeater being a bilateral mobile repeater whose internal memorystores a subscriber or identification number of the mobile repeater, themobile repeater comprising, coupled to the repeater controller, at leastone bilateral radiotelephone transceiver and one bilateral auxiliaryradiation transceiver, each of them being matched by its parameters withthe base transceiving station and the auxiliary radiation transceiver ofthe mobile communication means, respectively.

[0010] The method in accordance with the present invention, first,eliminates the impact exerted on individual's health by a mobilecommunication means operating jointly with base transceiving stationsand, second, improves quality of communication. Other features andadvantages of the invention will be obvious from the following detaileddescription and claims 1-16.

BRIEF DESCRIPTION OF THE DRAWINGS

[0011]FIG. 1 is a structural black diagram of a first embodiment of amobile communications system.

[0012]FIG. 2 is a structural block diagram of another embodiment of amobile communications system.

[0013]FIG. 3 is a structural block diagram of another embodiment of amobile communications system.

[0014]FIG. 4 is a functional block diagrams of a mobile communicationmeans.

[0015]FIG. 5 is a flow chart illustrating how a radiotelephone in mobilecommunications system operates.

[0016]FIG. 6 is a flowchart illustrating how a radiotelephone can bedisable.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017]FIG. 1 represents a structural block diagram of a first embodimentof a mobile communications system wherein an apparatus for transmittinga message includes a mobile communication means 1, such as a mobiletelephone having a transceiver antenna 2, and a bilateral mobilerepeater 3 having a transceiver antenna 4, a receiver 5 for receiving anauxiliary radiation flux 6 emitted by the mobile communication means 1,and an emitter 7 of an additional auxiliary radiation flux 8. Theadditional auxiliary radiation can be generated by the bilateral mobilerepeater 3 as a light, infrared or ultrasonic radiation modulated by thetransmitted data. The system further includes one or more basetransceiving stations (BTS) 9 having an antenna 10. The bilateralcommunication feature of the mobile repeater 3 provides the ability ofretransmitting a message both from the mobile communication means 1 tothe BTS 9, and from the BTS to the mobile communication means 1. Thebase transceiving station 9 is coupled with a first subscriber numberlogging means (not shown), such as any conventional means, e.g. MobileSwitching Center (MSC) comprising Home Location Registers (HLR) for GSM,and another devices. The bilateral mobile repeater 3 is implemented as aportable device located near a subscriber who has the mobilecommunication means 1, and intended to retransmit the auxiliaryradiation flux 6, as well as the additional auxiliary radiation 8 fromthe bilateral mobile repeater. Process of transmission of amessage-encoded, e.g. by modulation, electromagnetic radiation from themobile communication means, where the electromagnetic radiation haspredetermined values of electromagnetic radiation parameters, is shownby dashed broken arrow 11, while process of reception, by the mobilecommunication means from the BTS 9, of electromagnetic energy fluxhaving predetermined parameters and modulated by transmitted data isshown by dashed broken arrow 12. Process of transmission by thebilateral mobile repeater 3 of a message-encoded, e.g. by modulation,electromagnetic radiation having predetermined values of its parameters,is shown by broken arrow 13, while the process of reception, by thebilateral mobile repeater 3 from the BTS 9, of electromagnetic energyflux with predetermined parameters and modulated by transmitted data isshown by broken arrow 14. For convenience, in the following descriptionthe reference number of appropriate broken line will also refer to acorresponding communication channel. By way of example, instead of thephrase “process of reception, by the mobile repeater 3 from the BTS 9,of electromagnetic energy flux having predetermined parameters andmodulated by transmitted data is shown by broken arrow 14” the phrase“data is received from the BTS 9 on channel 14” will be used.

[0018]FIG. 2 shows a structural block diagram of a mobile communicationssystem wherein the auxiliary radiation is an electromagnetic radiation15, and the additional auxiliary radiation is an electromagneticradiation 16. To transmit and receive the auxiliary radiation 6, themobile communication means 1 has an additional antenna 17, and thebilateral mobile repeater 3 has an additional antenna 18. It should benoted that a similar repeater design is described in U.S. Pat. No.4,539,706, and the system can use several mobile repeaters 3, eachhaving a subscriber number of its own. In operation of the bilateralmobile repeater 3 and the mobile communication means 1, two commontransceiving antennas 19, 20 can be used (FIG. 3). In the latter case aduplex filter—a device for dividing a reception and transmissionband—can be used. It should be noted that channels 11, 12, 13 and 14 arephysical channels (representing e.g. a combination of time and frequencydivision channels and defined as a sequence of radio frequency channelswith frequency hopping and time slots), and can also include logicalcontrol and clock channels (control signal transmission channels, commoncontrol channels, individual control channels, frequency controlchannel, multiple access channel, etc.) on which control and locksignals are exchanged between the BTS 9 and the mobile communicationmeans 1 (channels 11, 12), or between the BTS 9 and the bilateral mobilerepeater 3 (channels 13, 14) All of the signals are generated in a basestation controller (BSC) coupled to the BTS 9.

[0019]FIG. 4 shows functional block diagrams of a mobile communicationmeans 1, such as a mobile radiotelephone, and a bilateral mobilerepeater 3. The mobile radiotelephone comprises, connected via aninterface 21 to a central controller 22, one or more transceivers 23, atleast two of which are a radiotelephone transceiver and an auxiliaryradiation transceiver. Each of the transceivers 23 includes at least anoutput unit (radio circuitry) 24 connected to an individual or commonantenna 25. The central controller 22, in turn, comprises along with: aninput device and a display unit (not shown) a central processor unit(CPU) 26 connected to a memory 27. The bilateral mobile repeater 3comprises, connected via an interface 28 to a repeater controller 29,one or more transceivers 30, at least two of which are a bilateralradiotelephone transceiver and a bilateral auxiliary radiationtransceiver, each of then being matched by its parameters with the basetransceiving station 9 and a respective auxiliary radiation transceiver23, respectively. The aforementioned bilateral communication ability ofa respective transceiver provides the capability of data reception fromand transmission to only one of said means 1, 9. Each radio transmitter30 includes at least an output unit 31 (radio circuitry) coupled to anindividual or common antenna 32. A repeater controller 29, in turn,comprises a central logic unit (CLU) 33 connected to an internal memory24 of the bilateral mobile repeater. Some embodiments can compriseelectronic identification card reading means 35 coupled to the.repeatercontroller. A similar means for reading from an identification cardcomprising e.g. a first subscriber or identification number can beincluded in the mobile communication means 1. In addition, the bilateralmobile repeater can further comprise an additional identification cardreading means 36 coupled to the repeater controller 29. In anotherembodiment of the mobile repeater, the identification card can be eithera detachable or built-in unit. In another embodiments of the bilateralmobile repeater, a respective bilateral auxiliary radiation transceivercan be a bilateral transceiver of light, infrared or ultrasonicradiation, and furthermore, one bilateral mobile repeater 3 can operatewith several mobile communication means 1; a respective auxiliaryradiation transceiver 23 of each mobile communication means 1 shouldshall be matched with a respective bilateral auxiliary radiationtransceiver 30. It should be noted that channels 15 and 16 could beprovided by such wireless communication standards as DECT, NTT DigitalCordless, CT2, Bluetooth. In this case, however, to simplify thebilateral mobile repeater design it is expedient to use additionalrepeater controllers 29 suitable for the corresponding system, e.g. DECTsystem. An additional interface would be also needed to couple the DECTsystem to the standard used in the mobile repeater, e.g. GSM.

[0020]FIG. 5 is a flow chart illustrating how the apparatus functions.Reference numerals in blocks shown in the flow chart correspond to thefollowing steps. 38 denotes the step “Generate and transmit enablesignal”; 39 denotes the step “Establish connection”; 40 denotes the step“Estimate communication quality”; 41 denotes the decision step“Communication quality satisfies?”; 42 denotes the step “Indicate”; 43denotes the step “Establish connection”; 44 denotes the decision step“Communication quality satisfies?”; 45 denotes the decision step“Repeater enabled?”; 46 denotes the step “Indicate”; 47 denotes the step“Generate instruction”; 48 denotes the step “Generate instruction”, 49denotes the step “Generate instruction”; 50 denotes the decision step“Repeater enabled”?; 51 denotes the step “Indicate”; 52 denotes the step“Generate instruction”; 53 denotes the step “Generate instruction”; 54denotes the step “Generate instruction”; 55 denotes the step “Readdressthe call”; 56 denotes the step “Exchange data”; 57 denotes the step“Conversation”; 58 denotes the step “Establish connection”; 59 denotesthe decision step “Communication quality satisfies?”; 60 denotes thestep “Indicate”; 61 denotes the decision step “Any more signals totransmit?”; 62 denotes the step “Exchange data”; 63 denotes the step“Conversation”; 64 denotes the decision step “Data exchange completed?”.

[0021]FIG. 6 is a flow chart illustrating how the radiotelephone can bedisabled. Reference numerals in blocks shown in the flow chartcorrespond to the following steps. 67 denotes the step “Enter disablecode”; 68 denotes the step “Enable radiotelephone”; 69 denotes the step“Make measurement”; 70 denotes the decision step “Radiation levelexceeds the specified value?”; 71 denotes the step “Disable”; 72 denotesthe step “Indicate”; 73 denotes the step “Indicate”; 74 denotes the step“Establish connection”; 75 denotes the step “Conversation”; 76 denotesthe decision step “Conversation completed?”.

[0022] The apparatus for transmitting a message in a mobilecommunications system operates in accordance with the algorithms shownin FIGS. 5 and 6. The algorithms are implemented using dedicatedsoftware stored both in the mobile communications system itself and inmemory of the mobile means 1, 3. The operation starts (block 37) fromenabling a mobile communication means 1. If the latter is aradiotelephone, step 37 comprises its enabling to generate and transmita signal to enable a bilateral repeater 3 or to leave the stand-by mode(block 38). The signal can be transmitted by one of transceivers 23.After reception of the signal by input elements (antenna 32 or receiver5) of a respective transceiver 30 and provision of the signal to inputof a repeater controller 29, connection is established (block 29) with abilateral mobile repeater 3 using auxiliary radiations 6, 8, 15, 16.After the connection has been established, quality of communication overauxiliary radiation is estimated (block 40), and, if required, thebilateral mobile repeater parameters are shown on the display of themobile communication means 1 (status of power supply of the bilateralmobile repeater, its location, etc.). Estimation of communicationquality and transmission of above parameters can be accomplished bygenerating, in the mobile repeater 3, a specific signal which eithertransmits quality data of the signal received from the mobilecommunication means on the channel using auxiliary radiation, or is asignal per se, by which the communication quality is judged, but in themobile communication means in this case. Estimation of signal quality isperformed, as will be shown below, by standard methods using dedicatedsoftware after the signal has passed through an A/D converter which canbe included in the central controller 22. It should be noted thatvariation of a signal level is a standard function inherent in numerousmobile systems, e.g. CDMA and GSM mobile telephone communicationssystems. Signal is generally estimated after its detection andcalculation of the signal-to-noise ratio integrated for a predeterminedtime period. In the absence of the above transmission and receptionprocesses shown by broken arrows 13 and 14 (“No” at the decision step45) and when the quality estimate of the channels 6, 8, 14, 15 usingauxiliary radiations is unsatisfactory (“No” at the decision step 40)the central controller 22 generates an instruction (step 47) toestablish connection between the mobile communication means 1 and theBTS 9 on communication channels 11, 12 (step 58). It should be notedthat in this case quality estimate values of communication between themobile communication means 1 and mobile repeater 3 are specified so that.e.g. a message is received by the mobile communication means 1 from thebase transceiving station by receiving an electromagnetic energy fluxhaving predetermined parameters and modulated by transmitted data.

[0023] The method of transmitting a message in a mobile communicationssystem comprises: transmitting (broken dash arrow 11), by a mobilecommunication means having a first subscriber or identification number,an electromagnetic radiation encoded by the message, e.g. by modulation,the electromagnetic radiation having predetermined values ofelectromagnetic radiation parameters, and receiving (broken dash arrow12), by the mobile communication means 1 from the base transceivingstation 9 linked with first subscriber number logging means, anelectromagnetic energy flux having predetermined parameters andmodulated by transmitted data. If communication quality estimate onchannels 11, 12 is unsatisfactory (“No” at the decision step 59) and ifdesired to repeat attempt to establish connection (“Yes” at the decisionstep 61), either the signal is re-transmitted (step 38) or thecommunication is completed (step 64). If the communication qualityestimate is satisfactory (“Yes” at the decision step 59), data iscommunicated (steps 62, 63) on communication channels 11, 12 between themobile communications system 1 and the BTS 9, step 39 being performedcontinuously or periodically during the data exchange process (“No” atthe decision step 63). Step 63 provides, first, transmission andreception of a message (e.g. as a conversation in duplex mode) oncommunication channels 11, 12, and step 62 provides communication ofcontrol and clock signals between the mobile communication means 1 andbase transceiving station 9. If the quality estimate of channels 6, 8,15, 16 using auxiliary radiations is satisfactory (“Yes” at the decisionstep 41), the repeater controller 29 generates instructions (step 43) toestablish connection between the bilateral mobile repeater 3 and the BTS9 on communication channels 13, 14. It should be noted that in this casethe channel quality estimate values for communication between the mobilecommunication means 1 and the mobile repeater 3 are specified so thatmessages are received by the mobile communication means by receivingfrom the mobile repeater an additional auxiliary radiation modulated bytransmitted data. Like the previous case, in the absence of abovetransmission and reception processes on channels 13, 14 (“No” at thedecision step 50) and if the quality estimate is unsatisfactory (“No” atthe decision step 44), the central controller 22 generates aninstruction (step 52) to establish connection between the mobilecommunication means 1 and the BTS 9 on communication channels 11, 12. Ifa predetermined value of communication quality is reached (“Yes” at thedecision step 44), all the processes are performed (step 55) thataccompany connection of the bilateral repeater 3 with the basetransceiving station 9, and then the bilateral mobile repeater 3receives from the base transceiving station 9 an electromagnetic energyflux having predetermined parameters and modulated by transmitted data,and the message is received by the mobile communication means byreceiving from the mobile repeater 3 an additional auxiliary radiation8, 16 modulated by transmitted data. It should be noted that dependingon the base station software (BSS) used in the base station equipmentconnected to the BTS 9, before (or after) step 57, step 56 can beperformed to describe or re-address the call, or simply log a secondsubscriber number in a respective logging means connected to the BTS 9.In this case e.g. when the radiotelephone 1 is called, connection isestablished automatically or by operator with the mobile repeater 3,with which control and clock signals are exchanged and through which themessage is exchanged with radiotelephone 1. All of the above steps(re-addressing of the call, logging of a second number, etc.) associatedwith subscriber numbers can be also performed with other numbers used ina respective mobile communications system. By way of example, in the GSMsystem such numbers include International Mobile Subscriber Identity(IMSI), International Mobile Equipment Identifier (IMEI), ISDNsubscriber number. The use of one of such numbers is possible, inparticular when a unified subscriber number is assigned to the user. Inthis case each incoming or outgoing call entails operation of the systemthrough the mobile repeater if the latter is logged (step 55) at thebase station. As noted above, in further operation of the system themobile repeater and the base transceiving station exchange control andclock signals (on channels 13, 14) (step 56), and messages areexchanged, e.g. as a conversation in duplex mode, through the mobilerepeater 3 between the mobile communication means 1 and the basetransceiving station 9 (step 57). It should be noted that communicationquality estimates are tracked continuously or periodically duringoperation of the system on channels 15, 16 and channels 13, 14 (“No” atthe decision step 64), i.e. quality estimate values of communicationbetween the mobile communication means and the mobile repeater (“No” atthe decision step 41) or the mobile repeater and the base transceivingstation (“No” at decision step 44) are set such that the mobile repeatergenerates a signal, after reception of which in the base transceivingstation the mobile communication means receives from base transceivingstation an electromagnetic energy flux having predetermined parametersand modulated by transmitted data. When unsatisfactory communicationquality estimate occurs in the operation (“Yes” at the decision step.45), (“Yes” at the decision step 50) of the mobile repeater 3, thelatter can generate signals (steps 48, 53) to be received by the BTS 9to establish communication directly with the radiotelephone 1. Themobile repeater can simultaneously generate another signals (steps 49,54) instructing the controller 22 to perform the steps 47 and 52. Mostof the aforementioned conditions can be indicated on the radiotelephonedisplay, e.g. indication of respective modes (quality status ofcommunication between the mobile communication means and the mobilerepeater, quality status of communication between the mobile repeaterand the base transceiving station, etc.) shown in FIG. 5 in blocks 42,46, 51 and 60. To improve service and operation characteristics, somemobile communication means and mobile repeaters can include thefollowing additional functions or elements: a mobile repeater canprovide audible or light signals (to locate the mobile repeater) when acorresponding key is pressed on the mobile communication means or whenthe mobile communication means outputs ring signal; a mobile repeatercan provide audible or light signals when communication isunsatisfactory between the mobile repeater and the mobile communicationmeans; direction towards the mobile repeater location can be indicatedon the mobile communication means; a mobile repeater can be equippedwith directional antennas 4, 18, 20 and systems for automaticallyorienting the antennas in the optimal direction; audible message can besent to the user of the mobile communication means about status of amobile repeater (battery discharge alarm, mobile repeater locationsignaling, signal of presence of shielding objects between the mobilerepeater and the radiotelephone). An important service function providedby the invention is the ability of disabling the radiotelephone whenpower of electromagnetic radiation 11 exceeds a predetermined value.This function (see flow chart in FIG. 6) can be used e.g. by parentswhose children may neglect the mobile repeater when talking over theradiotelephone. In this case to enable the radiotelephone (step 66) itis necessary to enter a disable code in the radiotelephone memory, e.g.via a keypad (step 67). Then after re-enabling the radiotelephone (step68) the level of electromagnetic radiation 11 having predeterminedparameter values will be measured (step 69). If the radiation levelexceeds the predetermined value (“Yes” at the decision step 70) theradiotelephone will be disabled (step 71) and appropriate indicationwill appear on its display (step 72). If the radiation level is smallerthan the predetermined value (“No” at the decision step 70), appropriateindication is displayed (step 73) and connection is established with theBTS 9 (step 74) to accomplish conversation and communication of controland clock data; in this case during the conversation over theradiotelephone (step 75) the electromagnetic radiation level is tracked(“No” at the decision step 76), (step 69).

[0024] The invention can be suitably used in particular in suchcommunication fields as mobile telephone communication of all knownstandards (GSM, TDMA, JDC, CDMA, etc), trunking radiotelephonecommunications system; personal wireless communication radio stations.This invention can find its wide use also in the public places wherepersons using a mobile telephone communication can be present. In thiscase, such places are provided with multichannel mobile repeaters, eachcomprising, for example, a plurality of subscriber numbers and increasedradiation power. Thus, a person having a mobile telephone describedherein will be able, first, to reduce irradiation of his brain byhazardous electromagnetic radiation, and, second, improve reliability ofcommunication.

1. A method of transmitting a message in a mobile communications system,including the steps of: transmitting by a mobile communication means,such as a radiotelephone having a first subscriber or identificationnumber and an input device and a display, an electromagnetic radiationencoded by the message, for example by modulation, and havingpredetermined values of electromagnetic radiation parameters; andreceiving, by the mobile communication means from a base transceivingstation coupled with a first subscriber or identification number loggingmeans, an electromagnetic energy flux having predetermined parametersand modulated by transmitted data; generating, by the mobilecommunication means, a message-encoded auxiliary radiation; and using,for each mobile communication means, at least one mobile repeater havinga memory, said mobile repeater receiving and processing the auxiliaryradiation for predetermined values of quality estimates of communicationbetween the mobile communication means and the mobile repeater, orbetween the mobile repeater and the base transceiving station, andgenerating and transmitting said message-encoded electromagneticradiation; and exchanging control and clock signals between the mobilecommunication means and the base transceiving station; storing, in themobile repeater memory, a second subscriber or identification number,and connecting, for a predetermined value of said communication qualityestimate, the mobile repeater to the base transceiving station, thenreceiving by the mobile repeater from the base transceiving station theelectromagnetic energy flux having the predetermined parameters andmodulated by the transmitted data; wherein the message being received bythe mobile communication means by receiving from the mobile repeater anadditional auxiliary radiation modulated by the transmitted data, andsaid exchanging of the control and clock signals being performed betweenthe mobile repeater and the base transceiving station.
 2. The method asclaimed in claim 1, wherein a second subscriber or identification numberis logged in said logging means for the predetermined value of saidcommunication quality estimate.
 3. The method as claimed in claim 1,further comprising generating, by the mobile repeater, an additionalauxiliary radiation as light or infrared radiation modulated by thetransmitted data.
 4. The method as claimed in claim 1, furthercomprising generating, by the mobile repeater, an additional auxiliaryradiation as ultrasound radiation modulated by the transmitted data. 5.The method as claimed in claim 1, further comprising specifying suchquality estimate values of communication between the mobilecommunication means and the mobile repeater, at which values the messageis received by the mobile communication means by receiving from therepeater an additional auxiliary radiation modulated by the transmitteddata.
 6. The method as claimed in claim 1, further comprising specifyingsuch quality estimate values of communication between the mobilecommunication means and the mobile repeater, at which values the messageis received by the mobile communication means by receiving from the basetransceiving station the electromagnetic energy flux having thepredetermined parameters and modulated by the transmitted data.
 7. Themethod as claimed in claim 1, further comprising disabling thetransmission of the electromagnetic radiation having the predeterminedvalues of the electromagnetic radiation parameters by entering a disablecode in the mobile communication means via the input device.
 8. Themethod as claimed in claim 7, further comprising disabling thetransmission of the electromagnetic radiation if the radiation levelexceeds a predetermined value.
 9. The method as claimed in claim 1,further comprising specifying such quality estimate values of thecommunication between the mobile communication means and the mobilerepeater, or between the mobile repeater and the base transceivingstation, at which values a signal is generated in the mobile repeater,after receiving the signal by the base transceiving station the messageis received by the mobile communication means from the base transceivingstation by receiving the electromagnetic energy flux with thepredetermined parameters and modulated by the transmitted data.
 10. Themethod as claimed in claim 1, further comprising indicating on thedisplay of the mobile communication means, a quality status ofcommunication between the mobile communication means and the mobilerepeater.
 11. The method as claimed in claim 1, further comprisingindicating on the display of the mobile communication means, a qualitystatus of communication between the mobile repeater and the basetransceiving station.
 12. An apparatus for transmitting a message in amobile communications system comprising one or more base transceivingstations and a mobile communication means, including, connected to acentral controller, a radiotelephone transceiver and an auxiliaryradiation transceiver matched, over auxiliary communication channels,with a mobile repeater including a repeater controller coupled to aninternal memory of the mobile repeater, wherein the mobile repeater is abilateral mobile repeater whose internal memory stores a subscriber oridentification number of the mobile repeater, the mobile repeatercomprising, connected to the repeater controller, at least one bilateralradiotelephone transceiver and one bilateral auxiliary radiationtransceiver, each of them being matched by its parameters with the basetransceiving station and with the auxiliary radiation transceiver of themobile communication means, respectively.
 13. The apparatus as claimedin claim 12, wherein the bilateral auxiliary radiation transceiver isone of a bilateral light, an infrared or an ultrasonic radiationtransceiver.
 14. The apparatus as claimed in claim 12, wherein thebilateral mobile repeater comprises an electronic identification cardreading means connected to the repeater controller.
 15. The apparatus asclaimed in claims 12, wherein the bilateral mobile repeater comprises anadditional electronic identification card reading means connected to therepeater controller.
 16. The apparatus as claimed in claim 12,comprising two or more mobile communication means, each having anauxiliary radiation transceiver matched with the bilateral auxiliaryradiation transceiver.